Employees with the longest tenures are also the least likely to be engaged, according to a new study released by Gallup. The polling company found that after years with the same company, employees can become apathetic and complacent, losing the desire to make a difference. The lack of engagement can take the form of doing the bare minimum to get by, or even holding grudges. While it might be tempting for management to blame this behavior on low levels of engagement, Gallup found that in most cases, company policy facilitates these undesirable behaviors. Retaining long-tenured, highly capable employees is difficult, and employers must focus on keeping those with experience on board and engaged. The highest-performing employees, Gallup found, have three things in common: They have high levels of engagement, they have worked with the company for more than a decade, and they are in roles where their tasks align with their talents.